Collet workpiece stop



FIG. 1 is a top and side perspective view of the collet workpiece stop embodying the design of the present invention, the side opposite to the side shown in FIG. 1 being a mirror image of such side;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom view thereof. 

The ornamental design for a collet workpiece stop, as shown and described. 